132 GENERAL REVIEWS. 



HeseheleP, K.— Ueber die Gattung T'lcurotomaria. Biol. Centralbl., 1901, Bd. 

 xxi, pp. 569—582. 



Iheringf, H. von. — The UnionUlac of Norlh America. Naut., 1901, vol. xv, pp. 

 37—39. 50—53- 



Simpson, C. T.— On the Classificaiion of the Unionldae. Ibid., pp. 77—82. 



SimrOth, H. — Ueber die Abhangigkeit der Nacktschneckenbildur.g vom Klima. 

 Biol. Centralbl, 1901, Bd. xxi, pp. 503 — 512. 



Kerr, J. G. — Phylogcnetic Relationship between Amphineura and Cephalopoda. 

 Zool. Anz., 1901, Bd. xxiv, pp. 437, 43S. 



GENERAL REVIEWS. 



A Treatise on Zoology.— Edited by E. Ray Lankester. — Ft. iv. The Platy- 

 helmia. Mesozoa, and Nemertini. By \V. Blaxland Benhani. 8vo, pp. viii + 

 204. London, 1901. Adam and Charles Black. 



A further volume of this invaluable treatise has been issued forming Bart iv. It 

 deals with the Platyhelmia, the Mesozoa, and the Nemertini, and Professor Benham 

 is responsible for the whole of the work. Unfortunately, as the Editor points out, 

 the work was in print three }-ears ago, when the author left ICngland for New 

 Zealand, but the Editor is satisfied that no important omissions due to this fact occur 

 in the book, the proofs of which have been revised and some additions made during 

 the present year. Further Mr. R. C. Punnett has added some notes to the section 

 on the Nemerlina, practically bringing the work up to date, a few omissions, how- 

 ever, do occur, but these do not generally affect the value of the work. 



The volume before us forms the most complete and 'up-to-date account of the 

 particular phyla of which it treats, and cannot fail to prove of great service to 

 zoologists. 



A word must be said in praise of the illustrations, of which many are new, some 

 of the semi-diagrammatic figures are capital, such for instance as fig. xiii, p. 29, 

 illustrating the various relations of the uterus in Aquatic Tiiclads, fig. I, j). 51, 

 anatomy of a schematic Heterocotylean, fig. xxxii, p. 141, life-history of a Cystlccirns, 

 and nianv others. 



EDITOR'S NOTES. 



A large number of Subscribers having expressed the wish that the volumes of 

 the Journal should be annual ones, we have brought volume viii to a close w ith the 

 end of 1901. It will be noticed however, that the actual number of plates exceeds 

 what we have previously issued in two years, while the printed matter remains almost 

 the same. 



In order not to delay the ]:)ublication of the difterent ]iarts, the Editor requests 

 that contributors requiring illustrations, will kindly forward their drawings as early 

 as possible. 



To Contributors, Subscribers, and all who liave in any way furthered the interests 

 of the Journal during 1901, the Editor tenders his grateful acknowledgement. 



At the Anniversary meeting of the Royal Society, held on November 30lh, Dr. 

 William Thomas Blanford was elected as a m.ember of the Council, and was also the 

 recipient of a Royal Medal, for his work in connection with the geographical 

 distribution of animals. 



